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Aalborg Totalizer User Manual

Page 11

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8

2.

Choose scale factor Vs and division factor D from Table 2 which
correspond to your previously calculated Fs.

3.

Connect the Totalizer to the transducer (see e.1)

4. Carefully remove front panel from the Totalizer. Using the digital

multi meter connected to the 0 to 5 Vdc signal at the output of
transducer, set the flow rate on the transducer to the full scale
flow (5 Vdc). Connect the second digital multimeter with selected
frequency function (resolution of 4 1/2 digit is required) to pin [T5]
on the Totalizer printed circuit board. Maintain full scale
flow and adjust the potentiometer R8 (SCALE) for frequency
reading equal to Vs. For example if you have a transducer with
full scale flow range of Fm = 6 L/Min, your Fs = 6/60 = 0.1 and
from Table 1 the value of Vs = Fs * 10 = 1 kHz.

5.

Install jumper JP1 into a position which corresponds to your
division factor D from Table1. For previous example, D = 10000
and the jumper has to be installed for pins [7] and [8] JP1.

TABLE 2

Fm - FULL SCALE RANGE IN [UNIT/MINUTE]

Fm [unit/min]

0.3 to 3.0

3 to 30

30 to 300

30 to 3000

> 3000

Fs [unit/sec.]

0.005 to 0.05

0.05 to 0.5

0.5 to 5.0

5.0 to 50

> 50

Vs [kHz] Scale

Factor

Fs *100

Fs *10

Fs

Fs / 10

Fs / 100

D Division

Factor

10000

JP1 7-8

10000

JP1 7-8

1000

JP1 5-6

100

JP1 3-4

10

JP1 1-2

Output

Unit

[unit]

[unit]

[unit]

[unit]

[unit]